The space shuttle Challenger explosion was a defining moment of the 1980s. Whether you were watching on TV or in person, chances are, you remember exactly where you were and how you felt.

On Jan. 28, 1986, NASA’s 25th space shuttle mission, Challenger, left the launchpad in Cape Canaveral, Florida. Seventy-three seconds into flight, Challenger exploded over the Atlantic Ocean as ...

Forty years after the space shuttle Challenger disintegrated shortly after liftoff, the disaster remains one of the most consequential tragedies in U.S. spaceflight history.

(CNN) - Wednesday marks the 40th anniversary of the Challenger space shuttle explosion. It was a moment of collective grief on Jan. 28, 1986, when the space shuttle exploded during a live broadcast.

The morning of the Space Shuttle Challenger explosion 40 years ago still remains the coldest Jan. 28 ever on the.

The Space Shuttle Challenger disaster on January 28, 1986, killed all seven astronauts on board, but disturbing details later ...

On Jan. 28, 1986, the Space Shuttle Challenger exploded 73 seconds after takeoff. All seven crewmembers on board were killed.

On Jan. 28, 1986, the Space Shuttle Challenger exploded 73 seconds after takeoff. All seven crew members on board were killed ...

NASA's space shuttle Challenger completed 10 missions before it broke apart during a launch in 1986, killing seven astronauts.

Jan. 28, 1986, 7 spacefarers were killed when shuttle Challenger exploded midair after launching from Kennedy Space Center in ...

Forty years ago, Americans were shocked when the space shuttle Challenger exploded 73 seconds after it launched on a chilly ...